Combined lathe and drill



A. s. THOMPSON COMBINED LATHE AND DRILL Feb. 22,1927. ,35

Filed May 25, 1925 5 Sheets-Sheet 1 Feb. 22 1927.

A. s. THOMPSON COMBINED LATHE AND DRILL Filed ma 25, 1925 '5sheets-sheen Emir-It tttttt S52E15 Feb. 22, 1927.

A. S. THOMPSON COMBINED LATHE AND DRILL 5 Sheets-Sheet 5 Filed May 25,1925 Feb. 22, 1927, 1,618,358

A. S. THOMPSON COMBINED LATHE AND DRILL File d May 25, 1925 '5ShBBtS-ShOOt '4 .Arblzurfi. fiomlzsarv.

Feb; 22, 1927. 1,618,358

A. s. THOMPSON COMBINED LATHE AND D RILL Filed May 25, 1925 sSheets-Sheet 5 [II FF" I 3 I h m ,'S N 'T"T:7 o .N

panying drawings,

Figure 1 is a side elevation of the im-.

'Patented Feb. 22, 192 7.

UNITED STATES LBTH'UR S. THOMPSON, OF ONTARIO, CALIFORNIA COMBiNED LATHEAND DRILL.

. Application filed May 25, 1925. Serial'lio. 32,749.

This invention relates to metal drills and lathes and especially to thatclass used by ewelers and where universal movement is provlded for thetool so that a great variety of work may be performed on a very smallobject.

The object of the-invention is to secure a tool by means of a chuck andgive same a rotary or radial movement and position or to incline thetool away from the vertical at a desired angle and to raise and lowersame while being driven by a motor.

Another object of the invention is to pro-' yidemeans for locking thesevarious adjust- 1ng means at the desired position to operate on themetal article held by suitable base chuck or work holder.

- These and other details and objectsof the invention are more fullydescribed in the following specification, set forth in the appendedclaims and illustrated inthe accomwherein? proved drill.

Fig. 2 is a front view of the same.

- Fig. 3 is an elevation principally in vertical section.

- Fig. 4 is a front view of the head carrying sliding box and itssupport. a

Fig. 5 is a rear view of the same.

Fig. 6 is a planof the base block and the "horizontal bar and its ring.

- Fig.

I fied orms and their details.

' of any well known type.

-. adapted to receive a ring- Fig. 7 is a side view of the from its.support. I

Fig.8 is a similar view of the device used as a lathe.

1 9 is an end elevation of the device. Fig. 10 isan end view of thelathe supportlng bar and head, and

Fi 11 to 17 inclusive are device detached views of modi- 'n a ring 10that The device is arranged.

bench and that may be secured to a work is adapted to containabase-block 11 which avertical passage 12. to

may rotate and has contain the stem of a chuck thisQblock 11, is 13 thatis split at one side and-hasthe clamping screw 14 to secure it to theblock, while from the rmgs opposite side extends a bar 15 preferablyround in'cross section and is adapted to have clamped to it the standard16 that 1s split .at its rear side and is secured to the barby the screw17, or may be loosened and reor work holder A reduced portion of the pinmoved entirely if desired, so that some other tool may be carried onthis bar.

Straddling the standard 16 is a yoke 18 adapted to move through thestrap '19 that is secured to the standard and be adjusted at any desiredheight by a screw 20 which plays through the strap. At the top orcrosspiece 21 of the yoke 18 is a dovetail 22 that 1s received ina'sim'ilarly; shaped recess. 23 in a box 24 also split at its rear end25 to be acted on by a screw 26 to form a clamp for the purposehereinafter described.

Swivelled in a plate 27 at the rear end 25 of the box 24 is an adjustingscrew 28 which plays in a threaded recess in the cross piece 21 to movethe box along the yoke and rest it at any desired location by means ofthe handle 29.

Fitting withinthe bore 30"of the box 24' is a cylindrical the hingemember 33 of a head34 that is pivoted and adapted to swing on the pin 35and held at any desired angle by threads on and adjusted by the head 36.permanent vertical position for the drill may be attained by a pin 37adapted to through the jaws and the hinge mem er,

ass

stem 31 of jaws 32 that hold the stem 31 being clamped by the screw 26.

'To' change the angle of the head, the pin 37 is removed and t e headmay be swung around on its pivot and held 1n the newposition by theclamping action of the screwhead 36.

Adapted to freely move in the head 34 is a barrel 38 having at its upperend aws 39 united at their yoke 40' and forming bearings fora chuckspindle 41 that carriesa cone pulley 42. adapted to be connected'by abelt with the pulley 43 on the drivmgshaft' of an electric motor 44,best shown in Fig. where it will be seen supported by a 5 having studs46 that'enter openings 47 at the sides of the jaws 39 where they areclamped by the screws 48, but may be readily released and removed.

frame The lower-end of thechuck spindle 41 is I the parts that itcarries, a rack bar 52' is se i cured to its side and meshing with theteeth thereof is a pinion 53 rotatable in a frame 54 by means of ahandle 55 that may be located in one of the sockets 56 of a wheel or hub57.- The frame 54 is pivoted at its up per end 58 to the outer edge 59of the head 34 and a pin or screw 60 looks the frame at its lower endtothe edge of the head 34. This frame 54 and pinion also serves to retainthe barrel in the head but when it is desired to remove the former forother operations the pin 60 is removed and the frame is free to swingupward and the teeth of the pinion and the barrel are disengaged. Q

In order to convert the device into a lathe the barrel and jaws areremoved from the head 34 and the bar 15 removed from the base block 11and, as shown in Fig. 8, a bar 61 havin a stud shown in dotted linesthat is adapted to fit in the vertical passage 12 is substituted and onthe top of this-is located the barrel 38 and'it s jaws 39.

The upper side of the bar 61 has a groove 62 with shoulders 63 and thedetached lathe, as shown in Figs. 3. and 7 has a headed bolt 64 thatfits in said groove 62 and engages its shoulders when retracted by thecam-shaft 65 within the uniting piece 40 of. the jaws 39 and operated bya handle 66, thus securing the device to the bar. The barrel 38 is inthis instance supported at its outer end in a head 67 carried at theother end of bar 61 from the jaws and this block has screws 68 to clamthe barrel and a locking bolt 69 operate as the bolt 64.

Within one end of the bar 61 is a socket 70 to receive a bar 7.1 that isclamped and held rigid by a screw 72 to carry a rest 73 for the toolthat is to operate in conjunction with the lathe.

This latter arrangement of the barrel and its parts as a lathe permitsof the use of the motor on the opposite side of the device as shown inFigs. 7 and 8 and when it is de sired to lock the chuck at a desiredposition a in 74 (Fig. 7) may be ssed through one o the jaws 39 and intot e pulley 42 where a series of recesses is provided and is shown inFig. 9. V

In this manner the rotating tool carrying members may be used in anupright or veritical position inclined to any angle betwden the verticaland horizontal, or it may be readily employed for horizontal o rationand suflicient adjuncts are provide for all of these operations.

In Fig. 2 a stop 75 is shown that may be used to secure a work holdingclutch when it is desired to use same.

This etc is pivoted and adjustable so that it may be rought into contactwith teeth or perforations in the edge of a work holder such as shown inFig. 11 so as to allow the work to be rotated step by she and operatedon at regular intervals aroun its surface.

Oil ducts 7 6 are provided in the jaws 39 to provide lubricants for therotating tube 41 and a pin 77 may be used to adjust the jaws 33 at anydesired angle on the axis of the stem 31 by entering one of a series ofsockcts around the box 24 and be secured by screw 78.

It is obvious that the parts may be otherwise arranged or modifiedwithout departin from the essential features above described or from thescope ofthe appended claims.

Modified forms of the improved drill and lathe are shown in Figs. 11 to17 and in this instance the motor 44 is in line with the tool and thearmature shaft is appropriately journalled while the said motor is heldrigi The shaft so carries at its end the chuck 81 for the drill 82. 1

By the arrangement shown in Fig. 11 the usual base 10, ring 13 and bar15 are provided and the standard 16 carries the ad justable box 24 inwhich is clamped by means of the screw 83 a stem 84 of the head 85 witha guide channel for a slide 86.

.This slide 86 has at. its side a rack bar 87 that is engaged by apinion on a shaft 88 and rotated by the handle 89 so that while the boxand slide may be moved and adjusted horizontally by the screw 29. theslide may be adjusted vertically by the handle 89.

The handle 89 and its hub in Fig. .11 are shown in dotted lines so asnot to hide the construction above referred to.

The slide 86 carries a yoke 90 in which the shaft 80 is journalled andwhich is similar to the yoke 40 already described and has the lockingbolt 64 operated by the handle 66 to secure it to the said slide. Anupri ht 91 forms a part of .the slide 86 and is a apted to support themotor 44 through the radial arm 92 which is clamped to the upright bymeans of the screw 93. The stop 94 that is secured to the upright limitsthe downward movement of the motor and drill so as to prevent injury toa chuck or work holder that may be on the base.

Fig. 11 shows a side view of this arrangement and Fi 12 is a front viewwherein the drill is uprig t'and adaptedt'o operate vertically, Fig. 11showing the work holder 94 mounted on ball bearin 95.

The motor 44 and t e drill as connected in one piece is shown mountedhorizontally on the the clamping screw 96 in Fig. 13. The arm 92 iscarrie by a bar 97 that screws into the head 98 and the arm is limitedin adjustment b Y the stops 99.

use 10 by means of the arm 92 and The lead 98 is supported by the stem i11 and has a rack bar104 operated by s pin-- ion 105. a

The stem 100 has a roove 106 to receive the lockin bolt 107 in t e baseblock 11 with a flattene side to receive or release the stem.

I, a small head 112-and fit in a socket in the head 98. The small head112 has a rigid bar 113 extending horizontally from it and that isadapted to fit in a recess in the head 98. The block 111 has a lockingbolt to attach a tool rest and the two bars 110 and 113 vmay be drawnoutso that the tool rest may be located any distance from the tool 82 andso that work may be performed on any article carried by thechuck 81.

These constructions show the adaptation of a small and portable latheand drill for jewelers work and capable of practically universaloperation and readily assembled or taken apart.

What'I claim as new is;

1. In a combined lathe and drill of the nature described, thecombination of a pivoted head, a universal movin sup ort for the head, abarrel lon 'tudina y a justablein said head, a spindi s and chuck insaid barrel, means in the spindle for adjusting the chuck, a motor onthe barrel and adapte to rotate the spindle.

.tween the motor and the spindle.

2. In an article of the nature described, the combination ofan'adjustable support,- a head pivoted on the support, a barrel adaptedto be longitudinally moved in the head, a spindle adapted to be rotatedand be lon itudinally adjusted in the barrel jaws at t e lower end ofthe spindle and adapted to be operated by its longitudinal adjustment, a

motor carried b the barrel and adapted to rotate the spind e, andconnecting means be-' '3. In an article of the nature described, thecombination an adjustable support, a pivoted head car ied b the support,a barrel longitudinally adjusta le in the head, a rack on the barrel anda pinion in the head to adjust said barrel, a chuck spindle in thebarrel, a bracket carried by the barrel, and a motor carried by thebracket ,to drive the spindle. v

4. In an :article of the nature described, the combination of anadjustable u right, a head pivoted in the same, a barrel adjustablelongitudinally in the head, jaws at the upper end of the barrel andconstituting bearings, a chuck spindle adapted to rotate in the barreland the jaws, a cone pulley on the barrel, a depending bracket from the'aws and adapted to carry a motor, 100 'ng clamps on the jaws adapted tosecure the bracket, and a rack and pinion carried by the head andadapted to efiect the adjust- 'ment of the barrel.

In testimony whereof I hereunto aflix my signature.

ARTHUR S. THOMPSON.

